CN115098898A - LED screen display method, display screen, device, electronic equipment and storage medium - Google Patents
LED screen display method, display screen, device, electronic equipment and storage medium Download PDFInfo
- Publication number
- CN115098898A CN115098898A CN202210589733.8A CN202210589733A CN115098898A CN 115098898 A CN115098898 A CN 115098898A CN 202210589733 A CN202210589733 A CN 202210589733A CN 115098898 A CN115098898 A CN 115098898A
- Authority
- CN
- China
- Prior art keywords
- gray scale
- information
- refreshing
- gray
- row
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/82—Protecting input, output or interconnection devices
- G06F21/84—Protecting input, output or interconnection devices output devices, e.g. displays or monitors
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The application relates to the technical field of information security, in particular to an LED screen display method, a display screen, a device, electronic equipment and a storage medium, wherein the LED screen display method is used for preventing other people from acquiring complete pictures through photographing; scattering the total gray information of each row of refreshing pictures according to gray levels to generate a plurality of local gray information; and alternately refreshing the local gray information of each line in turn according to the sequence among the lines until the refreshing display of one frame of picture is completed. The method and the device have the advantages that the total gray information of each row of the refreshing pictures is scattered according to the gray level to generate a plurality of local gray information, the local gray information of each row is alternately refreshed according to the sequence among the rows after recombination, the row of the refreshing pictures are refreshed for multiple times to improve the refreshing frequency, the visual effect of the pictures is improved, meanwhile, the camera shooting equipment cannot acquire complete images, and therefore the anti-theft shooting effect of the LED screen is achieved.
Description
Technical Field
The application relates to the technical field of information security, in particular to an LED screen display method, a display screen, a device, electronic equipment and a storage medium.
Background
Along with shooting equipment and shooting function are more and more powerful, the degree of difficulty of shooing is also more and more low, however, because the popularization of the technique of shooing and the convenience of shooing also bring a lot of potential safety hazards when bringing convenience to people, consequently, need provide a scheme that LED theftproof was shot, protect user's privacy.
The existing LED anti-theft shooting method generally adds information such as watermarks on a picture to reduce the imaging effect of shooting, or prevents the occurrence of candid shooting by detecting signals of candid shooting equipment, and the schemes are passive anti-candid shooting methods, so that the behavior of candid shooting cannot be fundamentally solved.
In view of the above problems, no effective technical solution exists at present.
Disclosure of Invention
The application aims to provide a display method, a display screen, a device, electronic equipment and a storage medium of an LED screen, and aims to solve the problem that candid shooting of the LED screen cannot be fundamentally prevented.
In a first aspect, the present application provides a method for displaying an LED screen, for preventing others from obtaining a complete picture by taking a picture, the method for displaying an LED screen includes the following steps:
obtaining each row refreshing picture of each frame picture in the LED screen, wherein the refreshing picture is formed by combining a plurality of gray scale information;
scattering the total gray information of each row of refreshing pictures according to gray levels to generate a plurality of local gray information;
and sequentially and alternately refreshing the local gray information of each line according to the sequence among the lines until the refreshing display of one frame of picture is completed.
The method and the device have the advantages that the total gray information of each row of the refreshing picture is scattered according to the gray level to generate the plurality of local gray information, and then the local gray information of each row is alternately refreshed according to the sequence between the rows, so that the single row refreshing picture is scattered and recombined to be formed by the plurality of local gray information, the gray refreshing frequency is improved by dividing the row refreshing picture into multiple refreshing, the visual effect of the picture is improved, meanwhile, the total gray information of the picture is scattered and recombined, the camera equipment cannot acquire complete images, and the anti-theft shooting effect of the LED screen is realized.
Optionally, in the display method of an LED screen provided by the present application, the step of scattering the total gray scale information of each row of the refreshed picture according to the gray scale to generate a plurality of local gray scale information includes the following steps:
scattering the total gray information of each row of refreshing pictures according to gray levels to generate a plurality of gray information;
and randomly arranging all the gray scale information of each row of the refreshing picture to generate a plurality of first local gray scale information.
The total gray information of the refreshed pictures in each line is scattered and randomly arranged, so that the gray of the pictures is not arranged from a low gray level to a high gray level according to the original gray level sequence, and the refreshed pictures in one line are recombined into a plurality of first local gray information for refreshing.
Optionally, in the display method of an LED screen provided by the present application, the step of scattering the total gray scale information of each row of the refreshed picture according to the gray scale to generate a plurality of local gray scale information includes the following steps:
splitting at least one piece of gray scale information in each row of refreshing pictures to obtain a plurality of pieces of gray scale information;
and randomly recombining the plurality of fragment gray scale information and the plurality of gray scale information to generate a plurality of second local gray scale information.
According to the method and the device, at least one piece of gray information in the refreshed picture is further disassembled, so that each row of refreshed picture is formed by recombining a plurality of pieces of gray information and a plurality of pieces of gray information, the refreshed picture is further disordered, and the picture in a clear and complete LED screen is further prevented from being shot by the camera equipment.
Optionally, in the LED screen display method provided by the present application, a difference between the local gray scale information with the largest number of gray scale information and the local gray scale information with the smallest number of gray scale information is greater than or equal to 2.
Optionally, in an LED screen display method provided by the present application, each piece of local gray scale information generated by scattering is arranged from a low gray scale to a high gray scale according to a gray scale sequence.
According to the LED screen display method, the total gray information of each row of the refreshed pictures is scattered according to the gray level to generate a plurality of local gray information, and then each local gray information is refreshed alternately according to the sequence among the rows, so that the original row-by-row refreshing is changed into the single-row refreshing pictures to be refreshed for multiple times, the gray refreshing frequency is improved, the visual effect of the pictures is improved, meanwhile, the total gray information of the pictures is scattered and recombined, the camera equipment cannot acquire complete images, and the anti-shooting effect of the LED screen is achieved.
In a second aspect, the present application provides a display screen, which includes a plurality of display areas, each display area is controlled by an independent driving IC to display, the refresh directions of adjacent display areas are different, and each display area performs refresh display by using the LED screen display method according to the first aspect.
The display of every display area is controlled by independent drive IC in this application, through the drive IC of two adjacent display areas of control, makes two adjacent display areas's the direction of refreshing different, and because the total grey scale information of every display area's the picture of refreshing all breaks up, the picture that makes camera equipment obtain when shooing divide into different display areas, and the picture that the different display areas show is inequality to can't acquire complete picture.
Optionally, in the display screen provided by the application, each display area performs screen refreshing display in any one of a horizontal refreshing direction, an inverse horizontal refreshing direction, a vertical refreshing direction, an inverse vertical refreshing direction and a skipping refreshing direction.
The application provides a display screen, control the refresh direction of display area through a plurality of independent drive IC, make different display area refresh according to the refresh direction of difference, wherein in every display area, generate a plurality of local gray information through scattering the total grey information that every row refreshed the picture according to the gray level, refresh the local gray information of every row according to the interline order in turn after the reorganization, thereby improve the grey refresh frequency through dividing a row refresh picture refresh many times, improve the visual effect of picture, scatter the reorganization with the total grey information of picture simultaneously, make camera equipment can't acquire complete image, thereby realize the theftproof effect of shooing of LED screen.
In a third aspect, the present application provides an LED screen display device for preventing others from obtaining a complete picture by taking a picture, the LED screen display device comprising:
the acquisition module is used for acquiring each row of refreshing pictures of each frame of picture in the LED screen;
the local gray information generation module: the local gray information generating module is used for scattering the total gray information of each row of refreshing pictures according to gray levels to generate a plurality of local gray information;
and the refreshing module is used for sequentially refreshing the local gray information of each row according to the sequence among the rows until the refreshing display of one frame of picture is completed.
The application provides a LED screen display device, break up according to the grey level through total grey scale information with every row refresh picture and generate a plurality of local grey scale information, the local grey scale information of every row is refreshed according to the row-to-row order in turn afterwards, thereby refresh the picture and divide and refresh many times into the single file with what originally, thereby improve grey level refresh frequency, improve the visual effect of picture, break up the recombination with the total grey scale information of picture simultaneously, make camera equipment can't acquire complete image, thereby realize the theftproof effect of taking a photograph of LED screen.
In a fourth aspect, the present application provides an electronic device, which includes a processor and a memory, where the memory stores computer readable instructions, and when the computer readable instructions are executed by the processor, the steps in the LED screen display method as provided in the first aspect are executed.
In a fifth aspect, the present application provides a storage medium, on which a computer program is stored, where the computer program, when executed by a processor, executes the steps in the LED screen display method provided in the first aspect.
From the above, it can be seen that the present application provides an LED screen display method, a display screen, a device, an electronic device, and a storage medium, in which the total gray scale information of each row of refreshed pictures is broken up according to gray levels and randomly recombined to obtain a plurality of local gray scale information, the local gray scale information of each row is alternately refreshed according to the sequence between rows after recombination, so that one row of refreshed pictures is refreshed for multiple times to increase the gray scale refresh frequency and improve the visual effect of the pictures, and the total gray scale information of the pictures is broken up and recombined at the same time, so that the camera device cannot acquire complete images, thereby achieving the anti-theft effect of the LED screen, and the LED display screen controls the refresh direction of the display area through a plurality of independent driving ICs, so that different display areas are refreshed according to different refresh directions, so that the pictures obtained by the camera device during image capturing are divided into different areas and the content displayed in each area cannot obtain a complete picture, further enhancing the effect of preventing photographing.
Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the present application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
Fig. 1 is a flowchart illustrating steps of a method for displaying an LED screen according to an embodiment of the present disclosure.
Fig. 2 is a flowchart of an embodiment of a step of generating a plurality of local gray scale information by scattering total gray scale information of each row of a refreshed picture according to gray scale in an LED screen display method according to an embodiment of the present disclosure.
Fig. 3 is a schematic diagram of generating a plurality of first local gray scale information in the step shown in fig. 2.
Fig. 4 is a flowchart of another embodiment of a step of generating a plurality of local gray scale information by scattering total gray scale information of each row of a refreshed picture according to gray scale in an LED screen display method according to an embodiment of the present disclosure.
Fig. 5 is a schematic diagram of generating a plurality of second local gray scale information according to the step shown in fig. 4.
Fig. 6 is a schematic diagram of an imaging effect of an image pickup apparatus in which a plurality of independent drive ICs of a display screen control a refresh direction according to an embodiment of the present application.
Fig. 7 is a schematic structural diagram of an LED screen display device according to an embodiment of the present application.
Fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Description of reference numerals: 1. the system comprises a first gray scale information, a second gray scale information, a third gray scale information, a fourth gray scale information, a 5, a fifth gray scale information, a 1a, a first fragment gray scale information, a 1b, a second fragment gray scale information, a 4a, a third fragment gray scale information, a 4b, a fourth fragment gray scale information, and an acquisition module, wherein the acquisition module is used for acquiring gray scale information of a first fragment; 200. a local gray information generation module; 300. a refresh module; 91. a processor; 92. a memory; 93. a communication bus.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
In general, the LED anti-candid method generally adds information such as watermark on the picture to reduce the imaging effect of shooting, or detects the signal of the candid device to prevent the candid, and the above solutions are passive anti-candid methods, which cannot fundamentally solve the behavior of candid.
In a first aspect, referring to fig. 1, fig. 1 is a flowchart of steps of an LED screen display method provided in an embodiment of the present application, and the LED screen display method shown in fig. 1 is used for preventing others from obtaining a complete picture by taking a picture, and the LED screen display method includes the following steps:
s100, obtaining each row of refreshing pictures of each frame of picture in the LED screen, wherein the refreshing pictures are formed by combining a plurality of pieces of gray scale information;
s200, scattering the total gray scale information of each row of the refreshed image according to the gray scale to generate a plurality of local gray scale information (for convenience of description, in different embodiments, the first local gray scale information and the second local gray scale information are used for distinguishing);
and S300, alternately refreshing the local gray information of each line in sequence according to the sequence among the lines until the refreshing display of one frame of picture is completed.
Specifically, the total gray scale information, the local gray scale information, and the gray scale information and the fragment gray scale information represent different gray scale values, respectively, where the total gray scale information represents a gray scale value of the refresh screen, the gray scale values represented by the local gray scale information, and the fragment gray scale information are all smaller than the gray scale value represented by the total gray scale information, and the gray scale value represented by the total gray scale information is equal to the sum of the gray scale values represented by the plurality of local gray scale information.
Specifically, in the step S200, the total gray scale information of each row of the refreshed image is broken up according to the gray scale, and the number of the broken pieces of gray scale information and the gray scale value represented by the corresponding gray scale information are not changed, which is to be understood that the breaking step is only to break up the pieces of gray scale information from the combined state to the freely independent state, so as to facilitate the subsequent recombination and arrangement of the pieces of gray scale information into the pieces of local gray scale information.
Generally, the picture display of an LED screen usually refreshes each row of the refreshed picture line by line, the gray information of the refreshed picture of each row is arranged according to the gray scale from low gray to high gray, and a complete display picture can be obtained after the refreshing of each row of the refreshed picture is completed.
In particular, the image pickup apparatuses are typically digital single lens reflex cameras, web cameras, and cellular phones, which use CMOS sensors, and most of the CMOS sensors use rolling shutters, and pixels in the CMOS sensors are not exposed to light all at the same time, but each row of sensors (typically horizontal rows, but may be vertical) is exposed to light in turn. The first row is enabled to collect light first, then the second row is enabled a short time later, and so on. After a row is exposed for a set shutter time, the light collection for that row will be disabled. Each row will then be disabled in turn. Each row enables the same selected shutter time, but the start and end times of each row are staggered. The result is that an enabled pixel strip is generated, the width of the sensor area pixel strip moving downwards defines the shutter speed, i.e. the camera device finally combines a plurality of pixel strips to obtain a complete picture by acquiring the pixel strip of each row.
Specifically, the conventional LED screen image refreshing manner is to refresh the refreshed image line by line until each line of the refreshed image is refreshed, and for example, if there are 4 lines of the refreshed image in an LED screen image, the refreshing of one frame of the image is completed after the 4 lines of the refreshed image are sequentially refreshed.
In this embodiment, the total gray scale information of a row of refreshed pictures is broken up into a plurality of local gray scale information, the local gray scale information is randomly arranged and combined, one of the local gray scale information in each row of refreshed pictures is refreshed, the next row of refreshed pictures is refreshed, the first row of refreshed pictures is returned after one cycle is completed, the next local gray scale information is refreshed, and so on until the refreshing of one frame of pictures is completed, for example, if there are 4 rows of refreshed pictures in a picture of an LED screen and there are 4 local gray scale information in each row of refreshed pictures, the refreshing of one frame of pictures is completed after 16 times of refreshing the local gray scale information.
Furthermore, by increasing the refreshing times of the picture, the original refreshing mode of displaying the picture in a row-by-row overlapping manner according to the gray level is changed into the mode of refreshing the picture in a row for displaying and overlapping the picture by refreshing the content of the refreshed picture for 4 times, so that the refreshing rate of the picture is increased, and the visual effect of human eyes is improved.
Generally, PWM dimming of LEDs is achieved by turning the LED on and off very quickly, with the LED light source at full output when the lamp is on all the time. When the lamp is off, the LED light source is off, and when the lamp is half on and half off, our eyes see it glowing at 50% brightness. As long as the pulse is fast enough, the pulse can be converted into an obvious constant brightness level by our eyes, in the exposure process of the camera equipment, if the display mode of the LED screen is the original mode, the LED can be powered on at the pulse width modulation timing, and the pixel line which is started at present can receive light to obtain a picture, in the embodiment, the total gray scale information of the refresh picture of the LED screen is scattered and recombined, so that a single-row refresh image is refreshed for multiple times, thereby increasing the refresh rate of the LED screen, because the gray scale of each local gray scale information is different, the local gray scale information of a high gray scale has a larger dimming frequency through PWM, thereby the brightness of a high gray scale part is higher, and the local gray scale information of a low gray scale has a lower dimming frequency through PWM, thereby the brightness of the low gray scale part is lower, and the brightness refreshed by the local gray scale information of different gray scales is different, in addition, for the camera device using the CMOS sensor, a row of refreshed pictures is refreshed at each shutter interval, and in the present application, since a row of refreshed pictures is recombined into a plurality of pieces of local gray scale information and is refreshed for a plurality of times, a plurality of times of refreshing cannot be completed within one shutter period to display a complete image, so that the picture captured by the camera device is an image with alternating bright and dark colors, the bright part is the gray scale refreshed in one shutter period, and the dark part is the gray scale not refreshed in one shutter period.
According to the LED screen display method provided by the embodiment of the application, the total gray information of each row of the refreshing picture is scattered according to the gray level to generate a plurality of local gray information, the local gray information of each row is refreshed alternately according to the sequence among the rows after recombination, the total gray information of the single row refreshing picture is scattered to obtain a plurality of local gray information and is randomly recombined, the original row-by-row refreshing is converted into the single row refreshing picture to be refreshed for a plurality of times, the gray refreshing frequency is improved, the visual effect of the picture is improved, meanwhile, the total gray information of the picture is scattered and recombined, the camera equipment cannot acquire a complete image, and the anti-shooting effect of the LED screen is achieved.
In some preferred embodiments, referring to fig. 2, fig. 2 is a flowchart of an embodiment of a step of generating a plurality of local gray scale information by scattering total gray scale information of each row of a refreshed picture according to gray scale in an LED screen display method provided in an embodiment of the present application, where the step includes the following steps:
s210, scattering the total gray information of each row of refreshing pictures according to gray levels to generate a plurality of gray information;
s211, randomly arranging all the gray scale information of each row refreshing picture to generate a plurality of first local gray scale information.
Specifically, the picture of the LED screen is divided into a plurality of frames, each frame is composed of a plurality of subframes, each subframe is composed of a plurality of row control time, and each row control time is composed of a plurality of time slices.
Specifically, each row control time refreshes a row of refreshed images corresponding to each row control time, and the gray information of each row of refreshed images is arranged from a low gray level to a high gray level according to a gray level sequence, in this embodiment, referring to fig. 3, fig. 3 is a conversion schematic diagram of an implementation manner of a step of scattering the total gray information of each row of refreshed images according to the gray level to generate a plurality of local gray information in an LED screen display method provided in the application embodiment, which can be obtained from fig. 3, each bar-shaped block is the gray information corresponding to the gray level, the length of the gray level indicates the size of the gray level, wherein, the first gray level information 1, the second gray level information 2, the third gray level information 3, the fourth gray level information 4, and the fifth gray level information 5 respectively represent the gray level information of different gray levels, and all the gray level information are arranged together to be the total gray level information, in this embodiment, the number of the fifth gradation information 5 is 8. In the embodiment, total gray information of a refresh picture of each line is scattered according to gray levels to obtain a plurality of gray information, and then the plurality of gray information is randomly combined and arranged to obtain a plurality of first local gray information, specifically, each line of refresh picture is composed of two or more first local gray information, each first local gray information is composed of at least one gray information, the refresh picture of each line is scattered to make the gray information of the picture not be arranged according to the original gray level sequence from a low gray level to a high gray level, and the refresh picture of one line is recombined into the plurality of first local gray information to be refreshed, in the embodiment, the total gray information is composed of 12 gray information, the total gray information is scattered and randomly arranged and combined into the plurality of gray information, and the plurality of gray information is randomly arranged and combined, 4 pieces of first local gradation information are obtained. Different from a conventional line-by-line refreshing mode, due to the fact that the gray values of different first local gray information are different in size, the brightness of the high gray part is high, and the brightness of the low gray part is low when the image pickup device performs imaging, so that the image pickup device generates a picture with alternating brightness and darkness when the image pickup device performs imaging, and a clear picture cannot be obtained. Specifically, in this embodiment, the refreshing mode of the LED screen is that each row of the refreshing screen is composed of at least two first local gray scale information, each time a complete first local gray scale information is refreshed, when the screen is refreshed, a first local gray scale information is refreshed in the first row of the refreshing screen, then the first local gray scale information is refreshed in the next row of the refreshing screen, after the refreshing is completed for one round, the first row of the refreshing screen is returned, the next first local gray scale information is refreshed, the next row of the refreshing screen is switched, and so on, until all the first local gray scale information is refreshed, that is, the refreshing display of a frame of the screen in the LED screen is completed.
In some preferred embodiments, referring to fig. 4, fig. 4 is a flowchart of another embodiment of a step of generating a plurality of local gray scale information by scattering total gray scale information of each row of a refreshed picture according to gray scale in an LED screen display method provided in an embodiment of the present application, where the step includes the following steps:
s220, splitting at least one piece of gray information in each row of refreshing picture to obtain a plurality of pieces of gray information;
s221 randomly reconstructs the plurality of pieces of gray scale information and the plurality of pieces of gray scale information to generate a plurality of pieces of second local gray scale information.
Specifically, referring to fig. 5, fig. 5 is a schematic conversion diagram of another implementation of the step of scattering the total gray scale information of each row of the refreshed image according to the gray scale to generate a plurality of local gray scale information, as shown in fig. 5, each bar-shaped square block is gray scale information corresponding to a gray scale value, and the length of the gray scale information represents the size of the gray scale value, where the first gray scale information 1, the second gray scale information 2, the third gray scale information 3, the fourth gray scale information 4, and the fifth gray scale information 5 represent gray scale information of different gray scale values respectively, and all the gray scale information are arranged together to be the total gray scale information, and in this embodiment, the number of the fifth gray scale information 5 is 8. In order to further improve the anti-shooting effect, in the embodiment, the grayscale information of the refreshed picture is fragmented and disassembled, so that the total grayscale information of each row of the refreshed picture is composed of a plurality of fragmented grayscale information and a plurality of grayscale information, then randomly recombining the fragment gray scale information and the gray scale information to obtain a plurality of second local gray scale information, thereby further disorganizing the refreshed picture and further preventing the camera device from shooting a clear and complete picture in the LED screen, in the embodiment, the total gray information consists of 12 pieces of gray information, the first gray scale information 1 is decomposed into first fragment gray scale information 1a and second fragment gray scale information 1b, the fourth gray scale information 4 is decomposed into third fragment gray scale information 4a and fourth fragment gray scale information 4b, and finally, the fragment gray scale information and the gray scale information are randomly recombined to obtain 4 pieces of second local gray scale information.
Specifically, compared with steps S210 and S211, in this step, the refreshed picture is fragmented and split on the basis of random sorting, so that the number of fragment grayscale information is greater than that of the grayscale information in steps S210 and S211, and the distribution of the recombined second local grayscale information is more disordered than that of the first local grayscale information, so that the light and shade alternation of the image pickup apparatus is more frequent during imaging, and the anti-shooting effect of the LED screen is improved.
Optionally, in some embodiments, the total grayscale information of the refreshed image is decomposed into a plurality of pieces of grayscale information with uniform lengths, and then random recombination is performed to obtain second local grayscale information, and in order to improve the anti-theft effect, preferably, in this embodiment, the total grayscale information of the refreshed image is decomposed into a plurality of pieces of grayscale information with non-uniform lengths, so that the length of the second local grayscale information after random recombination is non-uniform, and the refreshed image has a low-gray and low-brush phenomenon, which does not affect the visual perception of human eyes, but when the image capturing device images, because the lengths of the second local grayscale information are different, an image with alternately distributed light and dark is generated.
In some preferred embodiments, in an LED panel display method provided by the present application, a difference between the number of gray scale information of the local gray scale information with the largest number of gray scale information and the number of gray scale information of the local gray scale information with the smallest number of gray scale information is greater than or equal to 2.
Alternatively, in some embodiments, if the difference between the number of the local gray scale information with the largest number of gray scale information and the number of the local gray scale information with the smallest number of gray scale information is less than 2, the number of the gray scale values obtained at each time of refreshing is close, which may result in that the size of the gray scale value obtained at each time of refreshing is close, so that the light and dark stripes are not obvious when the image pickup device takes an image, thereby reducing the anti-theft effect, therefore, preferably, in this embodiment, the difference between the number of the local gray scale information with the largest number of gray scale information and the number of the local gray scale information with the smallest number of gray scale information is set to be greater than or equal to 2, so that the number of the gray scale information obtained at each time of refreshing is not equal, thereby the difference between the gray scale values obtained at each time of refreshing is greater, and finally the light and dark stripes are obvious in the picture obtained when the image pickup device takes an image, therefore, the anti-theft shooting effect of the LED display screen picture is improved.
In some preferred embodiments, in an LED screen display method provided by the present application, the gray scale information in each generated local gray scale information is arranged from a low gray scale level to a high gray scale level according to a gray scale order.
Specifically, in the general display method of the LED screen, the gray information of the refreshed image is arranged from low to high according to the gray level, and in order to ensure that the refreshed image can be displayed normally in human eyes and prevent the influence on the visual perception of human eyes, in this embodiment, the gray information of each local gray information generated by scattering is also arranged from low gray level to high gray level according to the gray level sequence.
In a second aspect, the display screen provided in this embodiment includes a plurality of display regions, referring to fig. 6, fig. 6 is a schematic diagram of an imaging effect of an image pickup apparatus in which a plurality of independent driving ICs of the display screen control a refresh direction, as shown in fig. 6, each display region is controlled by an independent driving IC to display, refresh directions of adjacent display regions are different, and each display region performs refresh display by using the LED screen display method according to the first aspect.
Specifically, the refreshing direction of the display screen is the arrangement direction of each row of refreshing pictures, and if the refreshing direction is horizontal refreshing, the refreshing pictures are arranged from left to right along the low gray scale to the high gray scale; if the refreshing direction is reverse horizontal refreshing, the refreshing pictures are arranged from right to left along the low gray scale to the high gray scale, and so on, and different refreshing directions correspond to different arrangement directions of the refreshing pictures.
Specifically, in this embodiment, different independent driving ICs can control different refresh frame recombination modes and/or different refresh directions.
Alternatively, if the independent driving IC controls only the recombination manner of the refresh screen, the refresh direction of each display region is the same, and the recombination manner of the refresh screen of each display region is made different by using the LED panel display method of the first aspect, so that the light and shade interleaving degree of each screen is made different, and finally, the image obtained by the image pickup apparatus has a plurality of regions, and the light and shade stripes of each display region are not the same.
Alternatively, if the independent drive ICs control only the refresh direction and the manner of rearrangement of the refresh screen is uniform, the image obtained by the image pickup apparatus has a plurality of display regions, and the bright and dark stripes of each display region are uniform but the bright and dark stripe directions of adjacent display regions are not uniform.
Preferably, in this embodiment, the independent driving IC controls the refresh direction as well as the recombination manner of the refresh screen, so that the image obtained by the image capturing apparatus has a plurality of display regions, the light and dark stripe interleaving degree of each display region is inconsistent, and the light and dark stripe directions of adjacent display regions are inconsistent, thereby making the image captured by the image capturing apparatus more disordered and improving the anti-theft effect of the LED screen.
According to the display screen provided by the embodiment of the application, the refreshing directions of the display areas are controlled through the independent driving ICs, so that the different display areas are refreshed according to different refreshing directions, in each display area, the total gray information of each row of refreshed pictures is scattered according to the gray level and randomly recombined to obtain the local gray information, the local gray information of each row is alternately refreshed according to the sequence among rows after recombination, the total gray information of the single-row refreshed pictures is scattered to generate the local gray information, the single-row refreshed pictures are refreshed for multiple times, the gray refreshing frequency is improved, the visual effect of the pictures is improved, the total gray information of the pictures is scattered and recombined, the camera equipment cannot obtain complete images, and the anti-shooting effect of the LED screen is achieved.
Specifically, the driving IC refreshes each row of refreshed images by driving, so as to display a picture, in some embodiments, the LED screen display method provided in the first aspect displays a picture, so that the image pickup apparatus displays a picture with staggered brightness when imaging, and on this basis, each display area is separately controlled by an independent driving IC, so that the grayscale refreshing direction of each area is different, so that the picture obtained by the image pickup apparatus is divided into a plurality of different areas, and the directions of the bright and dark stripes displayed in the different areas are different.
Optionally, a grayscale refreshing mode is randomly selected from different display regions to perform screen refreshing, specifically, in this embodiment, step S210 and step S211 are one grayscale refreshing mode, and step S220 and step S221 are another grayscale refreshing mode, because the selection probability of each grayscale refreshing direction is consistent, the display screen of an adjacent region may be a continuous screen, so that the anti-shooting effect is affected.
In some preferred embodiments, each display region performs screen refresh display in any one of a horizontal refresh direction, an inverse horizontal refresh direction, a vertical refresh direction, an inverse vertical refresh direction, and a skip refresh direction.
Specifically, various grayscale refresh directions such as horizontal refresh, inverse horizontal refresh, vertical refresh, inverse vertical refresh, skip refresh, and diagonal refresh can be preset, and specifically, the diagonal refresh can be also classified into 30 ° diagonal refresh, 45 ° diagonal refresh, and 60 ° diagonal refresh.
Specifically, by controlling different refreshing directions, a picture obtained by the image pickup device has a plurality of display areas as shown in fig. 6, and the directions of bright and dark stripes in adjacent display areas are inconsistent, so that the content of the picture is difficult to distinguish by an image formed by the image pickup device, and the anti-theft shooting function of the LED screen is realized.
In a third aspect, with reference to fig. 7, fig. 7 is a schematic structural diagram of an LED screen display device according to an embodiment of the present application, where the LED screen display device shown in fig. 7 is used to prevent others from obtaining a complete picture by taking a picture, and the LED screen display device includes:
the acquisition module 100, the acquisition module 100 is configured to acquire each row of refresh pictures of each frame of picture in the LED screen;
local gray information generation module 200: the local gray information generating module 200 is configured to scatter the total gray information of each row of the refreshed image according to the gray level to generate a plurality of local gray information;
the refreshing module 300, the refreshing module 300 is configured to sequentially and alternately refresh the local gray scale information of each row according to the sequence between rows until the refreshing display of one frame of picture is completed.
According to the LED screen display device provided by the embodiment of the application, the total gray information of each row of the refreshing picture is scattered according to the gray level and randomly recombined to obtain a plurality of local gray information, the local gray information of each row is alternately refreshed according to the sequence among the rows after recombination, so that the total gray information of the single row refreshing picture is scattered and recombined to be converted into a plurality of local gray information, the gray refreshing frequency is improved by refreshing one row of the refreshing picture for multiple times, the visual effect of the picture is improved, meanwhile, the total gray information of the picture is scattered and recombined, the camera equipment cannot acquire a complete image, and the anti-shooting effect of the LED screen is achieved.
Specifically, in this embodiment, each row of the refreshed image of each frame of image in the LED screen is obtained by the obtaining module 100, the gray information of the refreshed image is arranged from a low gray level to a high gray level according to the gray level sequence, then the total gray information in the refreshed image is scattered and randomly recombined by the local gray information generating module 200 to obtain a plurality of local gray information, and finally the local gray information is sequentially refreshed line by line until the local gray information of each row is refreshed completely, so as to obtain a complete display image, which is a bright-dark staggered image in the image formed by the image capturing device and is a normal display image in human eyes, and the visual effect of human eyes is not affected.
In a fourth aspect, referring to fig. 8, fig. 8 is an electronic device provided by the present application, including: the processor 91 and the memory 92, the processor 91 and the memory 92 being interconnected and communicating with each other via a communication bus 93 and/or other form of connection mechanism (not shown), the memory 92 storing a computer program executable by the processor 91, the processor 91 executing the computer program when the electronic device is running to perform any of the alternative implementations of the above embodiments to implement the following functions: obtaining each row refreshing picture of each frame picture in the LED screen; scattering the total gray information of each row of refreshing pictures according to gray levels to generate a plurality of local gray information; and alternately refreshing the local gray information of each line in turn according to the sequence among the lines until the refreshing display of one frame of picture is completed.
In a fifth aspect, the present application provides a storage medium having a computer program stored thereon, where the computer program, when executed by the processor 91, performs the method in any one of the alternative implementations of the above embodiments to implement the following functions: acquiring an original image, extracting characteristic information of the original image, encrypting according to the characteristic information and copyright information corresponding to the original image to generate encrypted data information, and steganographically writing the encrypted data information in the original image, or realizing the following functions: obtaining each row refreshing picture of each frame picture in the LED screen; scattering the total gray information of each row of refreshing pictures according to gray levels to generate a plurality of local gray information; and alternately refreshing the local gray information of each line in turn according to the sequence among the lines until the refreshing display of one frame of picture is completed.
It can be seen from the above that, according to the LED screen display method, the LED screen, the device, the electronic device and the storage medium provided in the present application, each row of the refreshed image is broken up according to the gray level and randomly recombined to obtain a plurality of local gray level information, the local gray level information of each row is alternately refreshed according to the sequence between the rows after being recombined, so that the single row of the refreshed image is broken up and recombined to be converted into a plurality of local gray level information, the gray level refresh frequency is increased by dividing the row of the refreshed image into a plurality of refreshes for a plurality of times, the visual effect of the image is improved, and the total gray level information of the image is broken up and recombined at the same time, so that the camera device cannot acquire a complete image, thereby achieving the anti-shooting effect of the LED screen, and the LED screen controls the refresh direction of the display area through a plurality of independent driving ICs, so that the different display areas are refreshed according to different refresh directions, and the image obtained by the camera device during the shooting is divided into different areas and the content displayed by each area cannot obtain a complete image Further enhancing the effect of preventing shooting.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit is merely a division of one logic function, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed coupling or direct coupling or communication connection between each other may be through some communication interfaces, indirect coupling or communication connection between devices or units, and may be in an electrical, mechanical or other form.
In addition, the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Furthermore, the functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above embodiments are merely examples of the present application and are not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An LED screen display method is used for preventing others from obtaining a complete picture by taking a picture, and is characterized by comprising the following steps:
obtaining each row of refreshing pictures of each frame of pictures in the LED screen, wherein the refreshing pictures are formed by combining a plurality of pieces of gray scale information;
scattering the total gray information of each row of the refreshing picture according to gray levels to generate a plurality of local gray information;
and sequentially and alternately refreshing the local gray scale information of each line according to the sequence among the lines until the refreshing display of one frame of picture is completed.
2. The method as claimed in claim 1, wherein the step of scattering the total gray scale information of the refreshed picture in each row according to gray scale to generate a plurality of local gray scale information comprises the steps of:
scattering the total gray information of each row of the refreshing picture according to gray levels to generate a plurality of gray information;
and randomly arranging all the gray scale information of each row of the refreshing picture to generate a plurality of first local gray scale information.
3. The method as claimed in claim 1, wherein the step of scattering the total gray scale information of the refreshed picture in each row according to gray scale to generate a plurality of local gray scale information comprises the steps of:
splitting at least one piece of gray scale information in each row of the refreshing picture to obtain a plurality of pieces of gray scale information;
and randomly recombining the plurality of fragment gray scale information and the plurality of gray scale information to generate a plurality of second local gray scale information.
4. The LED screen display method of claim 1, wherein the difference between the local gray scale information with the largest number of gray scale information and the local gray scale information with the smallest number of gray scale information is greater than or equal to 2.
5. The method as claimed in claim 1, wherein the gray scale information in each of the local gray scale information generated by the scattering is arranged from a low gray scale level to a high gray scale level in gray scale order.
6. A display screen, characterized in that the display screen comprises a plurality of display areas, each display area is controlled by an independent drive IC to display, the refresh direction of the adjacent display areas is different, and each display area adopts the LED screen display method according to any one of claims 1 to 5 to refresh the display.
7. The display screen according to claim 6, wherein each of the display regions performs screen refresh display in any one of a horizontal refresh direction, an inverse horizontal refresh direction, a vertical refresh direction, an inverse vertical refresh direction, and a skip refresh direction.
8. The utility model provides a LED screen display device for prevent that other people from obtaining complete picture through shooing, a characterized in that, a LED screen display device includes:
the LED display screen comprises an acquisition module (100), a display module and a display module, wherein the acquisition module (100) is used for acquiring refreshing pictures of each row of each frame of picture in the LED screen;
local gray information generation module (200): the local gray scale information generation module (200) is used for scattering the total gray scale information of each row of the refreshing picture according to gray scales to generate a plurality of local gray scale information;
the refreshing module (300), the refreshing module (300) is used for alternately refreshing the local gray scale information of each row in turn according to the sequence between the rows until the refreshing display of a frame of picture is completed.
9. An electronic device, comprising a processor (91) and a memory (92), the memory (92) storing computer readable instructions which, when executed by the processor (91), perform the steps of the method according to any one of claims 1-5.
10. A storage medium on which a computer program is stored, which computer program, when being executed by a processor (91), is adapted to carry out the steps of the method according to any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210589733.8A CN115098898A (en) | 2022-05-27 | 2022-05-27 | LED screen display method, display screen, device, electronic equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210589733.8A CN115098898A (en) | 2022-05-27 | 2022-05-27 | LED screen display method, display screen, device, electronic equipment and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115098898A true CN115098898A (en) | 2022-09-23 |
Family
ID=83288931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210589733.8A Pending CN115098898A (en) | 2022-05-27 | 2022-05-27 | LED screen display method, display screen, device, electronic equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115098898A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117079587A (en) * | 2023-10-16 | 2023-11-17 | 长春希达电子技术有限公司 | Active Micro-LED uniformity compensation method and display device |
-
2022
- 2022-05-27 CN CN202210589733.8A patent/CN115098898A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117079587A (en) * | 2023-10-16 | 2023-11-17 | 长春希达电子技术有限公司 | Active Micro-LED uniformity compensation method and display device |
| CN117079587B (en) * | 2023-10-16 | 2024-01-09 | 长春希达电子技术有限公司 | Active Micro-LED uniformity compensation method and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2940889B1 (en) | Visible-light-communication-signal display method and display device | |
| CN100350441C (en) | Intelligent ghost-eliminating method | |
| CN100463040C (en) | Display device and method, recording medium, and program | |
| EP2306441B1 (en) | Scan-type display device control circuit | |
| KR100870218B1 (en) | Image display device, driving circuit and driving method used in same | |
| US11039028B2 (en) | Visual privacy protection system | |
| CN101668149B (en) | Image processing apparatus, image processing method and image display system | |
| KR20130079301A (en) | Flicker free color visible light communication system | |
| CN107293257A (en) | Display panel, its display methods and display device | |
| CN102695074B (en) | Three-dimensional image display method and device | |
| CN112750399A (en) | Display panel driving method and device, display device, equipment and storage medium | |
| JP2011028135A (en) | Display device and driving method of the same | |
| JP6362608B2 (en) | Display method and display device | |
| CN115098898A (en) | LED screen display method, display screen, device, electronic equipment and storage medium | |
| Rensink et al. | Image flicker is as good as saccades in making large scene changes invisible | |
| CN116569248A (en) | System and method for PWM control of video display screens | |
| US11069305B2 (en) | Display device and method for driving the same | |
| JP2003298879A (en) | Method and device for displaying moving picture | |
| US8705882B2 (en) | Image processing apparatus selectively outputting first and second subframes at a predetermined timing and method of controlling the same | |
| CN101370339A (en) | LED back light module unit driving method | |
| CN1759365A (en) | Viewing masked images | |
| CN1936653A (en) | Liquid crystal display and its drive method | |
| US20050243024A1 (en) | Line scanning in a display | |
| JP2006287383A (en) | Information transmission system, imaging device, and light receiving control method | |
| DE112012004060T5 (en) | display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |